Where did you find it? I've not found an on-line dealer that actually seemed to sell it (e.g., Nashbar doesn't sell by width and an Amazon retailer didn't specify by type). My LBS thought he could order it (he is a Topeak dealer), but hasn't succeeded. I've been drooling over the pictures for a while as it looks T-shaped and might actually "get out of the way" where I'd rather not have saddle.

Eagerly anticipating your extended review!